From: Mikko Rasa <tdb@tdb.fi>
Date: Wed, 22 Jan 2014 19:54:28 +0000 (+0200)
Subject: Set panning when changing modes with XRandR
X-Git-Url: http://git.tdb.fi/?a=commitdiff_plain;h=b1a6dffafa27d689389b512668fd5c34757dbd1d;p=libs%2Fgui.git

Set panning when changing modes with XRandR

Apparently, certain sequences can confuse Nvidia drivers at least and
result in weird configurations if this is not done.
---

diff --git a/source/graphics/x11/display.cpp b/source/graphics/x11/display.cpp
index fe489ec..c2a4eaf 100644
--- a/source/graphics/x11/display.cpp
+++ b/source/graphics/x11/display.cpp
@@ -300,6 +300,23 @@ void Display::set_mode(const VideoMode &requested_mode, bool exclusive)
 		{
 			XRROutputInfo *o = XRRGetOutputInfo(priv->display, res, priv->monitors[i->index]);
 			XRRSetCrtcConfig(priv->display, res, o->crtc, CurrentTime, x, y, priv->modes[i->current_mode->index], rotation_to_sys(i->current_rotation), &priv->monitors[i->index], 1);
+
+			XRRPanning panning;
+			panning.timestamp = CurrentTime;
+			panning.left = x;
+			panning.top = y;
+			panning.width = i->current_mode->width;
+			panning.height = i->current_mode->height;
+			panning.track_left = panning.left;
+			panning.track_top = panning.top;
+			panning.track_width = panning.width;
+			panning.track_height = panning.height;
+			panning.border_left = 0;
+			panning.border_top = 0;
+			panning.border_right = 0;
+			panning.border_bottom = 0;
+			XRRSetPanning(priv->display, res, o->crtc, &panning);
+
 			XRRFreeOutputInfo(o);
 
 			i->x = x;