From 8d36f0a0cf85956d669a9d527bcb1ad435128d74 Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Mon, 29 Apr 2019 10:51:39 +0300
Subject: [PATCH] - tuned internal MoltenVK settings for better performance

See https://github.com/KhronosGroup/MoltenVK/issues/581#issuecomment-487293665
---
 src/posix/cocoa/i_video.mm | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/posix/cocoa/i_video.mm b/src/posix/cocoa/i_video.mm
index fb835f9db..bac7a136f 100644
--- a/src/posix/cocoa/i_video.mm
+++ b/src/posix/cocoa/i_video.mm
@@ -386,6 +386,11 @@ public:
 				setenv("MVK_CONFIG_FORCE_LOW_POWER_GPU", "1", 0);
 			}
 
+			// The following settings improve performance like suggested at
+			// https://github.com/KhronosGroup/MoltenVK/issues/581#issuecomment-487293665
+			setenv("MVK_CONFIG_SYNCHRONOUS_QUEUE_SUBMITS", "0", 0);
+			setenv("MVK_CONFIG_PRESENT_WITH_COMMAND_BUFFER", "0", 0);
+
 			try
 			{
 				m_vulkanDevice = new VulkanDevice();