From b9db43403461b5e87bb40b3d2fc0b5dbcea24542 Mon Sep 17 00:00:00 2001
From: Anton Baskanov <baskanov@gmail.com>
Date: Mon, 14 Aug 2023 16:04:33 +0700
Subject: [PATCH] winex11.drv: Mark drawable as dirty when setting pixel
 format.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=55341
---
 dlls/winex11.drv/opengl.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/dlls/winex11.drv/opengl.c b/dlls/winex11.drv/opengl.c
index c23df82c7b9..c9000648848 100644
--- a/dlls/winex11.drv/opengl.c
+++ b/dlls/winex11.drv/opengl.c
@@ -1393,17 +1393,27 @@ static struct gl_drawable *create_gl_drawable( HWND hwnd, const struct wgl_pixel
  */
 static BOOL set_win_format( HWND hwnd, const struct wgl_pixel_format *format, BOOL internal )
 {
-    struct gl_drawable *gl;
+    struct gl_drawable *old, *gl;
 
     if (!format->visual) return FALSE;
 
-    if (!(gl = create_gl_drawable( hwnd, format, FALSE, internal ))) return FALSE;
+    old = get_gl_drawable( hwnd, 0 );
+
+    if (!(gl = create_gl_drawable( hwnd, format, FALSE, internal )))
+    {
+        release_gl_drawable( old );
+        return FALSE;
+    }
 
     TRACE( "created GL drawable %lx for win %p %s\n",
            gl->drawable, hwnd, debugstr_fbconfig( format->fbconfig ));
 
+    if (old)
+        mark_drawable_dirty( old, gl );
+
     XFlush( gdi_display );
     release_gl_drawable( gl );
+    release_gl_drawable( old );
 
     win32u_set_window_pixel_format( hwnd, pixel_format_index( format ), internal );
     return TRUE;