From 726fe83b8464041581b74846090e285bcd0adc6f Mon Sep 17 00:00:00 2001
From: bruvzg <7645683+bruvzg@users.noreply.github.com>
Date: Tue, 30 Nov 2021 11:03:41 +0200
Subject: [PATCH] [macOS] Fix driver crash when enabling per-pixel transparency
 on M1 macs.

(cherry picked from commit f72cc71ebe130920b0f8ae30be710160b4d3a163)
---
 platform/osx/os_osx.mm | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/platform/osx/os_osx.mm b/platform/osx/os_osx.mm
index 59f21d21e59..1cad6d79187 100644
--- a/platform/osx/os_osx.mm
+++ b/platform/osx/os_osx.mm
@@ -2903,11 +2903,12 @@ void OS_OSX::set_window_per_pixel_transparency_enabled(bool p_enabled) {
 			layered_window = false;
 		}
 		[context update];
-		NSRect frame = [window_object frame];
 
 		if (!is_no_window_mode_enabled()) {
-			[window_object setFrame:NSMakeRect(frame.origin.x, frame.origin.y, 1, 1) display:YES];
-			[window_object setFrame:frame display:YES];
+			// Force resize window frame to update OpenGL context.
+			NSRect frameRect = [window_object frame];
+			[window_object setFrame:NSMakeRect(frameRect.origin.x, frameRect.origin.y, frameRect.size.width + 1, frameRect.size.height) display:NO];
+			[window_object setFrame:frameRect display:YES];
 		}
 	}
 }