From 0c2faae48bae7e0147740b9ac47c1aafe9c2e9c3 Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Sat, 1 Feb 2020 17:11:56 +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
---
 source/platform/posix/cocoa/i_video.mm | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/source/platform/posix/cocoa/i_video.mm b/source/platform/posix/cocoa/i_video.mm
index 0ce82e3d0..1cc73a343 100644
--- a/source/platform/posix/cocoa/i_video.mm
+++ b/source/platform/posix/cocoa/i_video.mm
@@ -186,8 +186,15 @@ 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