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X11: Fix queries crashing if monitor disconnected

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Merged from downstream kovidgoyal/glfw.  First of many.

Related to #1602.

(cherry picked from commit a5e5b782c7)
This commit is contained in:
Kovid Goyal 2018-08-21 13:04:52 +05:30 committed by Camilla Löwy
parent 6a9fd2e13f
commit 835dc3d327
1 changed files with 17 additions and 7 deletions
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24
src/x11_monitor.c
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@ -322,12 +322,16 @@ void _glfwPlatformGetMonitorPos(_GLFWmonitor* monitor, int* xpos, int* ypos)
XRRGetScreenResourcesCurrent(_glfw.x11.display, _glfw.x11.root);
XRRCrtcInfo* ci = XRRGetCrtcInfo(_glfw.x11.display, sr, monitor->x11.crtc);
if (xpos)
*xpos = ci->x;
if (ypos)
*ypos = ci->y;
if (ci)
{
if (xpos)
*xpos = ci->x;
if (ypos)
*ypos = ci->y;
XRRFreeCrtcInfo(ci);
}
XRRFreeCrtcInfo(ci);
XRRFreeScreenResources(sr);
}
}
@ -493,9 +497,15 @@ void _glfwPlatformGetVideoMode(_GLFWmonitor* monitor, GLFWvidmode* mode)
XRRGetScreenResourcesCurrent(_glfw.x11.display, _glfw.x11.root);
XRRCrtcInfo* ci = XRRGetCrtcInfo(_glfw.x11.display, sr, monitor->x11.crtc);
*mode = vidmodeFromModeInfo(getModeInfo(sr, ci->mode), ci);
if (ci)
{
const XRRModeInfo* mi = getModeInfo(sr, ci->mode);
if (mi) // mi can be NULL if the monitor has been disconnected
*mode = vidmodeFromModeInfo(mi, ci);
XRRFreeCrtcInfo(ci);
}
XRRFreeCrtcInfo(ci);
XRRFreeScreenResources(sr);
}
else