[gtk/ci-jobs: 6/7] vulkan: Handle VK_ERROR_UNKNOWN

[Emmanuele Bassi <ebassi src gnome org>]

commit c69595a3a97775fa0ca915834dbc5ea77a6241d8
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Tue Feb 11 14:07:43 2020 +0000

    vulkan: Handle VK_ERROR_UNKNOWN
    
    A newly added Vulkan 1.2 error.

 gdk/gdkvulkancontext.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
---
diff --git a/gdk/gdkvulkancontext.c b/gdk/gdkvulkancontext.c
index 5582afeb92..76f120b76a 100644
--- a/gdk/gdkvulkancontext.c
+++ b/gdk/gdkvulkancontext.c
@@ -205,7 +205,10 @@ gdk_vulkan_strerror (VkResult result)
     case VK_ERROR_FULL_SCREEN_EXCLUSIVE_MODE_LOST_EXT:
       return "An operation on a swapchain created with VK_FULL_SCREEN_EXCLUSIVE_APPLICATION_CONTROLLED_EXT 
failed as it did not have exlusive full-screen access.";
 #endif
-
+#if VK_HEADER_VERSION >= 131
+    case VK_ERROR_UNKNOWN:
+      return "An unknown error has occurred; either the application has provided invalid input, or an 
implementation failure has occurred.";
+#endif
     case VK_RESULT_RANGE_SIZE:
     case VK_RESULT_MAX_ENUM:
     default: