Gamma Control (Support RandR 1.2)

[doh123@…]

Just a feature request...

It would be great, now especially with RandR being put in, if Xquartz could control the screens gamma. Some games in X (native or Wine) are kind of dark and have gamma sliders in them, but in Xquartz they don't do anything... because from what I can tell Xquartz has no way to control screen gamma.

This could look weird in rootless mode, so maybe make it optional for rootless, but works in fullscreen modes?

[jeremyhu@…]

What are those games calling into to set the gamma? Is it via RandR or some other mechanism?

[doh123@…]

Replying to jeremyhu@…:

What are those games calling into to set the gamma? Is it via RandR or some other mechanism?

I really wish I knew... how would I find out? I know that the x server in Crossover handles it fine, but they might have work-a-rounds in their Wine source too.. but their Winesource by itself doesn't fix it cuz I've already built that against Xquartz and it was a no go.

I'll see what I can find out.

[doh123@…]

according to Vitamin on the winehq forums... gamma is controlled with Wine using... VidMode X11 extension (XF86VidModeSetGamma, XF86VidModeSetGammaRamp functions).

[jeremyhu@…]

Yeah, I don't think we'll be supporting xf86vm ... why don't they use RandR 1.3 to adjust gamma instead?

[doh123@…]

probably no one has gotten around to it.... its no major deal, just a "would be nice" type of thing... I'm sure eventually they will, so it might be best to add support in Xquartz for RandR gamma, as its more of the future.

[jeremyhu@…]

It would be nice to do this soon. We should implement RandR 1.2:

#if RANDR_12_INTERFACE
    RRScreenSetSizeProcPtr rrScreenSetSize;
    RRCrtcSetProcPtr rrCrtcSet;
    RRCrtcSetGammaProcPtr rrCrtcSetGamma;
    RRCrtcGetGammaProcPtr rrCrtcGetGamma;
    RROutputSetPropertyProcPtr rrOutputSetProperty;
    RROutputValidateModeProcPtr rrOutputValidateMode;
    RRModeDestroyProcPtr rrModeDestroy;
#endif