From f5ae26bb44c42369cbcf0a9b7da049222b5ecbf8 Mon Sep 17 00:00:00 2001
From: Olivier Fourdan <ofourdan@redhat.com>
Date: Fri, 10 Dec 2021 10:57:29 +0100
Subject: [PATCH 5/5] cursor-renderer/native: Add a means to disable HW cursors

When dealing with a faulty hardware or bugs in the driver, it might be
interesting to force the use of software cursors for debugging purposes.

Add a debug environment variable MUTTER_DEBUG_DISABLE_HW_CURSORS to
disable hardware cursors and force using software cursors.

Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/2046
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2150>
(cherry picked from commit 56939abd2f1691eea9edf85cb715ebf275944e7e)
---
 src/backends/native/meta-cursor-renderer-native.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/backends/native/meta-cursor-renderer-native.c b/src/backends/native/meta-cursor-renderer-native.c
index fcfe8eb98..237f9a3d5 100644
--- a/src/backends/native/meta-cursor-renderer-native.c
+++ b/src/backends/native/meta-cursor-renderer-native.c
@@ -1828,7 +1828,10 @@ meta_cursor_renderer_native_new (MetaBackend        *backend,
 
   priv->backend = backend;
 
-  init_hw_cursor_support (cursor_renderer_native);
+  if (g_strcmp0 (getenv ("MUTTER_DEBUG_DISABLE_HW_CURSORS"), "1"))
+    init_hw_cursor_support (cursor_renderer_native);
+  else
+    g_message ("Disabling hardware cursors because MUTTER_DEBUG_DISABLE_HW_CURSORS is set");
 
   return cursor_renderer_native;
 }
-- 
2.35.1