From 3b64bae32341d564881d51adcd95dcc691756d75 Mon Sep 17 00:00:00 2001
From: Camilla Berglund <elmindreda@elmindreda.org>
Date: Fri, 19 Feb 2016 08:56:46 +0100
Subject: [PATCH] Fix X11 WSI extension selection logic

---
 src/x11_window.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/x11_window.c b/src/x11_window.c
index eaac057a..46e2d32b 100644
--- a/src/x11_window.c
+++ b/src/x11_window.c
@@ -2148,7 +2148,7 @@ int _glfwPlatformGetPhysicalDevicePresentationSupport(VkInstance instance,
     VisualID visualID = XVisualIDFromVisual(DefaultVisual(_glfw.x11.display,
                                                           _glfw.x11.screen));
 
-    if (_glfw.vk.KHR_xcb_surface)
+    if (_glfw.vk.KHR_xcb_surface && _glfw.x11.x11xcb.handle)
     {
         PFN_vkGetPhysicalDeviceXcbPresentationSupportKHR vkGetPhysicalDeviceXcbPresentationSupportKHR =
             (PFN_vkGetPhysicalDeviceXcbPresentationSupportKHR)
@@ -2198,7 +2198,7 @@ VkResult _glfwPlatformCreateWindowSurface(VkInstance instance,
                                           const VkAllocationCallbacks* allocator,
                                           VkSurfaceKHR* surface)
 {
-    if (_glfw.vk.KHR_xcb_surface)
+    if (_glfw.vk.KHR_xcb_surface && _glfw.x11.x11xcb.handle)
     {
         VkResult err;
         VkXcbSurfaceCreateInfoKHR sci;