Re: RFC: New libxcvt library
Olivier Fourdan writes: > Can we consider moving “libxcvt” to the xorg/lib namespace in gitlab? Seems like a good plan to me; I've had several requests to add CVT support to xrandr and haven't done so because it would have involved pulling in a ton of code or creating a library like this :-) -- -keith signature.asc Description: PGP signature ___ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: https://lists.x.org/mailman/listinfo/xorg-devel
RFC: New libxcvt library
Hi all, Currently. the Xorg Xserver has its own implementation of the VESA CVT standard timing modelines generator in `hw/xfree86/modes/xf86cvt.c`. That code is placed in its own source file alone because it is also being used by the `cvt` utility. Because it's part of the Xorg DDX, Xwayland, which is another DDX also has a copy of the same code in `hw/xwayland/xwayland-cvt.c`. Now with Xwayland being a standalone package, mutter which uses the cvt utility at build time still needs to install `cvt` from Xorg to generate the modes used in Wayland. Some time ago, discussing with Jonas Adahl on irc, we thought it would be a good idea to have that code and utility part of its own standalone project, to avoid the code duplication and possibly ease contributions. That was https://gitlab.freedesktop.org/xorg/xserver/-/issues/1142 So I went ahead and did just that, called it “libxcvt” and placed in https://gitlab.freedesktop.org/ofourdan/libxcvt I also made a merge request to use that code in the Xserver: https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/637 Can we consider moving “libxcvt” to the xorg/lib namespace in gitlab? Cheers Olivier ___ xorg-devel@lists.x.org: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: https://lists.x.org/mailman/listinfo/xorg-devel
XRandR Verify Active Rate
A XRRScreenResources contains multiple XRRModeInfo and RROutput (which with
XRRGetOutputInfo() effectively means XRROutputInfo). Therefore, a screen can
have many outputs which in turn, can have many modes. The rate is a property of
the mode. Because of this many-to-many relationship, how can I determine what
the active rate is?
In other words:
XRRScreenResources *res = XRRGetScreenResources(display, default_root_window);
for (int i = 0; i < res->nmode; ++i) {
XRRModeInfo *mode_info = >modes[i];
// How do you verify this is the active rate?
double rate = (double)mode_info->dotClock / ((double)mode_info->hTotal *
(double)mode_info->vTotal));
}
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