From 202cfbb49e6f6f132eee21409055f3c894e803cc Mon Sep 17 00:00:00 2001
From: SRSaunders <82544213+SRSaunders@users.noreply.github.com>
Date: Sat, 25 May 2024 05:57:44 -0400
Subject: [PATCH] Enable debugPrintf example on macOS using validation layer
 (#1124)

---
 examples/debugprintf/debugprintf.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/examples/debugprintf/debugprintf.cpp b/examples/debugprintf/debugprintf.cpp
index 581c4e5b..c69d5cd0 100644
--- a/examples/debugprintf/debugprintf.cpp
+++ b/examples/debugprintf/debugprintf.cpp
@@ -45,6 +45,15 @@ public:
 
 		// Using printf requires the non semantic info extension to be enabled
 		enabledDeviceExtensions.push_back(VK_KHR_SHADER_NON_SEMANTIC_INFO_EXTENSION_NAME);
+
+#if (defined(VK_USE_PLATFORM_MACOS_MVK) || defined(VK_USE_PLATFORM_METAL_EXT)) && defined(VK_EXAMPLE_XCODE_GENERATED)
+		// SRS - Force validation on since debugPrintfEXT provided by VK_LAYER_KHRONOS_validation on macOS
+		settings.validation = true;
+		setenv("VK_LAYER_ENABLES", "VK_VALIDATION_FEATURE_ENABLE_DEBUG_PRINTF_EXT", 1);
+
+		// SRS - RenderDoc not available on macOS so redirect debugPrintfEXT output to stdout
+		setenv("VK_KHRONOS_VALIDATION_PRINTF_TO_STDOUT", "1", 1);
+#endif
 	}
 
 	~VulkanExample()