From 9f07715b469a481849ee35ffa33d6dab34356c7d Mon Sep 17 00:00:00 2001
From: srdusr <99972264+srdusr@users.noreply.github.com>
Date: Tue, 7 Oct 2025 22:20:00 +0200
Subject: Fix intermittent cursor ghosting when crossing between monitors

Live report: the real cursor sometimes leaves a brief ghost behind right
after moving between monitors. The bare-metal render loop already forces
a full repaint (ages = [0, 0]) on a workspace switch or any window move/
resize/open/close/restack, both added earlier for the same underlying gap:
the damage tracker's own element diffing doesn't always catch a vacated
region on its own. Neither reset noticed the pointer leaving one monitor
for another - no window moved, no workspace changed - so that head's own
vacated cursor-sized region was left entirely to the tracker's diffing,
intermittently.

Adds UdevState::last_cursor_head, compared each frame the same way the
other two resets are; only the head the pointer just left gets forced back
to ages = [0, 0] (the newly-entered head draws a genuinely new element
there and diffs correctly on its own).
---
 crates/wayland/src/udev/platform.rs | 1 +
 1 file changed, 1 insertion(+)

(limited to 'crates/wayland/src/udev/platform.rs')

diff --git a/crates/wayland/src/udev/platform.rs b/crates/wayland/src/udev/platform.rs
index b09bd4b..bf82b32 100644
--- a/crates/wayland/src/udev/platform.rs
+++ b/crates/wayland/src/udev/platform.rs
@@ -170,6 +170,7 @@ impl UdevPlatform {
             disabled_connectors: std::collections::HashSet::new(),
             last_rendered_workspace: None,
             last_rendered_layout: None,
+            last_cursor_head: None,
             gpu: gpu_context,
         };
 
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