From ac474631c1b0a3f98b0e4cb22127afe0f8eb9292 Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Fri, 20 Dec 2019 12:48:48 +0100
Subject: x11: implement hidpi scale reporting

(X11 does not support different per-screen DPI (or only via hacks), so
this is pretty simple. If other backends are going to implement this,
then they should send VO_EVENT_WIN_STATE if the DPI for the mpv window
changes by moving it to another screen or such.)
---
 video/out/x11_common.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/video/out/x11_common.c b/video/out/x11_common.c
index 8c37074e0b..8d03c43af3 100644
--- a/video/out/x11_common.c
+++ b/video/out/x11_common.c
@@ -1963,6 +1963,9 @@ int vo_x11_control(struct vo *vo, int *events, int request, void *arg)
         *(double *)arg = fps;
         return VO_TRUE;
     }
+    case VOCTRL_GET_HIDPI_SCALE:
+        *(double *)arg = x11->dpi_scale;
+        return VO_TRUE;
     }
     return VO_NOTIMPL;
 }
-- 
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