From a4c36a87dbfff4cf468b049549941af447c73c7a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B3zef=20Kucia?= <jkucia@codeweavers.com>
Date: Mon, 24 Oct 2016 15:28:08 +0200
Subject: [PATCH] demos: Flush XCB connection after creating window.

This fixes the "BadDrawable (invalid Pixmap or Window parameter)" error
thrown by vkGetPhysicalDeviceSurfaceCapabilitiesKHR() on Nvidia drivers.
---
 demos/demo_xcb.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/demos/demo_xcb.h b/demos/demo_xcb.h
index 6da32b6b..e30bb642 100644
--- a/demos/demo_xcb.h
+++ b/demos/demo_xcb.h
@@ -164,6 +164,8 @@ static inline struct demo_window *demo_window_create(struct demo *demo, const ch
 
     xcb_map_window(demo->connection, window->window);
 
+    xcb_flush(demo->connection);
+
     return window;
 }