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MonitorXrandr: fix setting gamma ramps

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The value passed to XRRCrtcSetGamma must be allocated with
XRRAllocGamma (because it relies on the locations of green and blue),
otherwise garbage is sent on the wire.

https://bugzilla.gnome.org/show_bug.cgi?id=706231
This commit is contained in:
Giovanni Campagna 2013-08-18 11:44:45 +02:00
parent 8ad5ccd2f8
commit 015c05fbf6
1 changed files with 8 additions and 6 deletions
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14
src/core/monitor-xrandr.c
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@ -921,14 +921,16 @@ meta_monitor_manager_xrandr_set_crtc_gamma (MetaMonitorManager *manager,
unsigned short *blue)
{
MetaMonitorManagerXrandr *manager_xrandr = META_MONITOR_MANAGER_XRANDR (manager);
XRRCrtcGamma gamma;
XRRCrtcGamma *gamma;
gamma.size = size;
gamma.red = red;
gamma.green = green;
gamma.blue = blue;
gamma = XRRAllocGamma (size);
memcpy (gamma->red, red, sizeof (unsigned short) * size);
memcpy (gamma->green, green, sizeof (unsigned short) * size);
memcpy (gamma->blue, blue, sizeof (unsigned short) * size);
XRRSetCrtcGamma (manager_xrandr->xdisplay, (XID)crtc->crtc_id, &gamma);
XRRSetCrtcGamma (manager_xrandr->xdisplay, (XID)crtc->crtc_id, gamma);
XRRFreeGamma (gamma);
}
static gboolean