Re: Gamma correction on G4 PowerBook
On Mon, 2003-09-29 at 01:07, Vincent Lefevre wrote:
> On 2003-09-29 00:55:22 +0200, Michel Dänzer wrote:
> > On Thu, 2003-09-25 at 22:02, Vincent Lefevre wrote:
> [xgamma]
> > > I've just tried, but it works incorrectly. Instead of getting
> > > an image of better quality, the image gets very ugly.
> >
> > Maybe you need a tool which gives you even more control than xgamma?
>
> But which one?
No idea, but both the hardware and the XVidMode extension allow for more
general colour correction than just gamma curves.
> > > I could compare with the hardware gamma correction of my Risc PC
> > > (using the VNC client on this machine), and there is a huge
> > > difference.
> >
> > FWIW, this is hardware gamma correction as well.
> [...]
>
> This is strange because with xgamma, only the image (displayed by
> Mozilla) seems to be affected, whereas with the -gamma option of
> XFree86, the whole screen was affected (but the results on the image
> were similar to what xgamma gives).
Weird, they should produce the same result given the same value,
otherwise it's probably a bug.
--
Earthling Michel Dänzer \ Debian (powerpc), XFree86 and DRI developer
Software libre enthusiast \ http://svcs.affero.net/rm.php?r=daenzer
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