From 0f0cfd88d7e6ece3ca6456df692f0055bde94be7 Mon Sep 17 00:00:00 2001
From: Tom Anderson <thomasanderson@chromium.org>
Date: Thu, 6 Mar 2025 11:57:39 -0800
Subject: [PATCH] GN build: Define VK_USE_PLATFORM_XLIB_KHR

This is required to define vkCreateXlibSurfaceKHR, which is required
by GTK4.

Depends on Dawn CL:
https://dawn-review.googlesource.com/c/dawn/+/229494

Needed to fix this Chromium issue:
https://g-issues.chromium.org/issues/345261080
---
 BUILD.gn | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/BUILD.gn b/BUILD.gn
index 7ec9577..11f1161 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -13,7 +13,10 @@ config("vulkan_headers_config") {
     defines += [ "VK_USE_PLATFORM_WIN32_KHR" ]
   }
   if (defined(vulkan_use_x11) && vulkan_use_x11) {
-    defines += [ "VK_USE_PLATFORM_XCB_KHR" ]
+    defines += [
+      "VK_USE_PLATFORM_XCB_KHR",
+      "VK_USE_PLATFORM_XLIB_KHR",
+    ]
   }
   if (defined(vulkan_use_wayland) && vulkan_use_wayland) {
     defines += [ "VK_USE_PLATFORM_WAYLAND_KHR" ]