From 42c6e0249f0b38322d8ac3d707bed121db792eba Mon Sep 17 00:00:00 2001
From: Matthias Clasen <mclasen@redhat.com>
Date: Sun, 9 Jun 2024 11:29:06 -0400
Subject: [PATCH] vulkan: Fix updating swap chains

gdk_vulkan_context_check_swapchain uses priv->current_format,
so we must update it first, and undo that if check_swapchain
falls. This fixes handling of high-depth back buffers in gsk.
---
 gdk/gdkvulkancontext.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/gdk/gdkvulkancontext.c b/gdk/gdkvulkancontext.c
index 806090470e..6b55e64b78 100644
--- a/gdk/gdkvulkancontext.c
+++ b/gdk/gdkvulkancontext.c
@@ -648,15 +648,18 @@ gdk_vulkan_context_begin_frame (GdkDrawContext *draw_context,
     {
       if (priv->formats[depth].gdk_format != priv->formats[priv->current_format].gdk_format)
         {
+          GdkMemoryFormat old_format = priv->current_format;
           GError *error = NULL;
+
+          priv->current_format = depth;
           if (!gdk_vulkan_context_check_swapchain (context, &error))
             {
               g_warning ("%s", error->message);
               g_error_free (error);
+              priv->current_format = old_format;
               return;
             }
         }
-      priv->current_format = depth;
     }
   for (i = 0; i < priv->n_images; i++)
     {