Merge branch 'vulkan-resize-fix' into 'main'

vulkan: Wait for device to be idle before create/recreating swapchain

See merge request GNOME/gtk!6183

gdk/gdkvulkancontext.c

@@ -383,6 +383,13 @@ gdk_vulkan_context_check_swapchain (GdkVulkanContext  *context,
 
   device = gdk_vulkan_context_get_device (context);
 
+  /*
+   * Wait for device to be idle because this function is also called in window resizes.
+   * And if we destroy old swapchain it also destroy the old VkImages, those images could
+   * be in use by a vulkan render.
+   */
+  vkDeviceWaitIdle (device);
+
   res = GDK_VK_CHECK (vkGetPhysicalDeviceSurfaceCapabilitiesKHR, gdk_vulkan_context_get_physical_device (context),
                                                                  priv->surface,
                                                                  &capabilities);