From 442f953d67ef39ff5c9df00f719c0f3cc44c2fe5 Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Tue, 7 Jan 2020 14:37:25 +0200
Subject: [PATCH] - fixed invalid context warnings with Cocoa backend

A bunch of 'CGContext<...>: invalid context 0x0' messages were printed to console during OpenGL view creation and resizing
---
 src/posix/cocoa/i_video.mm | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/posix/cocoa/i_video.mm b/src/posix/cocoa/i_video.mm
index d6d93ce489..90f41f8ee5 100644
--- a/src/posix/cocoa/i_video.mm
+++ b/src/posix/cocoa/i_video.mm
@@ -187,8 +187,15 @@ namespace
 
 - (void)drawRect:(NSRect)dirtyRect
 {
-	[NSColor.blackColor setFill];
-	NSRectFill(dirtyRect);
+	if ([NSGraphicsContext currentContext])
+	{
+		[NSColor.blackColor setFill];
+		NSRectFill(dirtyRect);
+	}
+	else if (self.layer != nil)
+	{
+		self.layer.backgroundColor = CGColorGetConstantColor(kCGColorBlack);
+	}
 }
 
 - (void)resetCursorRects