Reimplement window closing anim in an efficient way

- Keep a root surface cache to be accessible in surface destroyed()
- Only snapshot during / right before closing, rather than every frame
- Store textures rather than elements to handle scale and alpha properly

1 files changed, 3 insertions, 0 deletions

diff --git a/src/handlers/xdg_shell.rs b/src/handlers/xdg_shell.rs
index 2cbaad25..53001459 100644
--- a/src/handlers/xdg_shell.rs
+++ b/src/handlers/xdg_shell.rs
@@ -383,6 +383,9 @@ impl XdgShellHandler for State {
         let output = output.clone();
 
         self.backend.with_primary_renderer(|renderer| {
+            mapped.render_and_store_snapshot(renderer);
+        });
+        self.backend.with_primary_renderer(|renderer| {
             self.niri
                 .layout
                 .start_close_animation_for_window(renderer, &window);