From 71d7a9db79044d7aa479c136248f75542188e6f5 Mon Sep 17 00:00:00 2001
From: Manolo Gouy <Manolo>
Date: Mon, 29 Oct 2018 17:09:37 +0000
Subject: Fix handling of layer-backed sub GL window moved between retina and
 non-retina screens.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@13093 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
---
 src/Fl_cocoa.mm | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'src')

diff --git a/src/Fl_cocoa.mm b/src/Fl_cocoa.mm
index e1f5d44be..b0d7c4ccc 100644
--- a/src/Fl_cocoa.mm
+++ b/src/Fl_cocoa.mm
@@ -1255,9 +1255,9 @@ static FLWindowDelegate *flwindowdelegate_instance = nil;
     if (!window->as_gl_window()) { // move layered non-GL window to different resolution
      [(FLView*)[nsw contentView] viewFrameDidChange];
     }
-    if (window->parent()) {
-      [nsw setSubwindowFrame];
-      [[nsw contentView] display];
+    if (fl_mac_os_version < 101401 && window->parent() && window->as_gl_window() && Fl::use_high_res_GL()) {
+      Fl_Cocoa_Window_Driver *d = Fl_Cocoa_Window_Driver::driver(window);
+      [[nsw contentView] layer].contentsScale = d->mapped_to_retina() ? 2. : 1.;
     }
   }
 #endif
-- 
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