http://bugs.winehq.org/show_bug.cgi?id=26410
--- Comment #2 from Henri Verbeet hverbeet@gmail.com 2011-03-14 05:37:13 CDT --- Yeah, this is not a D3D thing. Wined3d just uses SetDeviceGammaRamp(), which ends up calling X11DRV_XF86VM_SetGammaRamp() in winex11.drv. This indeed uses the XVidMode extension, not XRRSetCrtcGamma().