From 651d749eeaaae9d63532ca990054410e01e2909b Mon Sep 17 00:00:00 2001
From: "alexey.lysiuk" <alexey.lysiuk@gmail.com>
Date: Sun, 24 Mar 2019 16:19:39 +0200
Subject: [PATCH] - limited MoltenVK logging without vk_debug

If vk_debug is set to zero (which is by default) only errors will be reported
---
 src/posix/cocoa/i_video.mm | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/posix/cocoa/i_video.mm b/src/posix/cocoa/i_video.mm
index e30e376fb..89471824e 100644
--- a/src/posix/cocoa/i_video.mm
+++ b/src/posix/cocoa/i_video.mm
@@ -95,6 +95,7 @@ EXTERN_CVAR(Bool, vid_hidpi)
 EXTERN_CVAR(Int,  vid_defwidth)
 EXTERN_CVAR(Int,  vid_defheight)
 EXTERN_CVAR(Int,  vid_backend)
+EXTERN_CVAR(Bool, vk_debug)
 
 CUSTOM_CVAR(Bool, vid_autoswitch, true, CVAR_ARCHIVE | CVAR_GLOBALCONFIG | CVAR_NOINITCALL)
 {
@@ -367,6 +368,12 @@ public:
 
 			[ms_window setContentView:vulkanView];
 
+			if (!vk_debug)
+			{
+				// Limit MoltenVK logging to errors only
+				setenv("MVK_CONFIG_LOG_LEVEL", "1", 0);
+			}
+
 			if (!vid_autoswitch)
 			{
 				// CVAR from pre-Vulkan era has a priority over vk_device selection
@@ -881,4 +888,4 @@ bool I_CreateVulkanSurface(VkInstance instance, VkSurfaceKHR *surface)
 	const VkResult result = vkCreateMacOSSurfaceMVK(instance, &windowCreateInfo, nullptr, surface);
 	return result == VK_SUCCESS;
 }
-#endif
\ No newline at end of file
+#endif