From 099ddfedc7def7150fde5b15d80e23aa5d57b53b Mon Sep 17 00:00:00 2001
From: TellowKrinkle <tellowkrinkle@gmail.com>
Date: Sun, 23 Jan 2022 22:10:04 -0600
Subject: [PATCH] GS:Mac: Properly init vulkan on main thread

---
 common/Vulkan/SwapChain.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/common/Vulkan/SwapChain.cpp b/common/Vulkan/SwapChain.cpp
index fc0d6834d0..1a7a4b2bce 100644
--- a/common/Vulkan/SwapChain.cpp
+++ b/common/Vulkan/SwapChain.cpp
@@ -28,6 +28,7 @@
 
 #if defined(__APPLE__)
 #include <objc/message.h>
+#include <dispatch/dispatch.h>
 
 #ifdef __i386__
 typedef float CGFloat;
@@ -52,6 +53,14 @@ Ret msgsend(Self self, const char* sel, Args... args)
 
 static bool CreateMetalLayer(WindowInfo* wi)
 {
+	// if (![NSThread isMainThread])
+	if (!msgsend<BOOL, Class>(objc_getClass("NSThread"), "isMainThread"))
+	{
+		__block bool ret;
+		dispatch_sync(dispatch_get_main_queue(), ^{ ret = CreateMetalLayer(wi); });
+		return ret;
+	}
+
 	id view = reinterpret_cast<id>(wi->window_handle);
 
 	Class clsCAMetalLayer = objc_getClass("CAMetalLayer");