From f5d02e68088d9669ad95c32585dcbde24abd6465 Mon Sep 17 00:00:00 2001
From: Scott Talbert <swt@techie.net>
Date: Tue, 13 Aug 2019 23:27:57 -0400
Subject: [PATCH] Enable Retina (HiDPI) support on OSX wxGLCanvas

Closes #15700.

Closes https://github.com/wxWidgets/wxWidgets/pull/1485
---
 src/osx/cocoa/glcanvas.mm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/osx/cocoa/glcanvas.mm b/src/osx/cocoa/glcanvas.mm
index 94051a7fd7..b2df34d9df 100644
--- a/src/osx/cocoa/glcanvas.mm
+++ b/src/osx/cocoa/glcanvas.mm
@@ -167,6 +167,7 @@ bool wxGLCanvas::DoCreate(wxWindow *parent,
     
     NSRect r = wxOSXGetFrameForControl( this, pos , size ) ;
     wxNSCustomOpenGLView* v = [[wxNSCustomOpenGLView alloc] initWithFrame:r];
+    [v setWantsBestResolutionOpenGLSurface:YES];
     
     wxWidgetCocoaImpl* c = new wxWidgetCocoaImpl( this, v, wxWidgetImpl::Widget_UserKeyEvents | wxWidgetImpl::Widget_UserMouseEvents );
     SetPeer(c);