From 18061191fdc019498610aee81f0df93f6c2ebd31 Mon Sep 17 00:00:00 2001
From: Can Celik <ogulcancelik@gmail.com>
Date: Wed, 16 Sep 2026 00:58:23 +0300
Subject: fix: keep remote surface updates incremental (#4209)

refs #3769

refs #3745
---
 src/server/headless.rs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'src/server/headless.rs')

diff --git a/src/server/headless.rs b/src/server/headless.rs
index 01d91bbd..f07c0c37 100644
--- a/src/server/headless.rs
+++ b/src/server/headless.rs
@@ -779,7 +779,7 @@ impl HeadlessServer {
         // rendering semantics. Force one fresh frame to every remaining client
         // even if the next rendered buffer compares equal to its cached frame.
         for client in self.clients.values_mut() {
-            client.request_repaint();
+            client.request_recompute();
         }
         if !start_pending_agent_resumes {
             self.app.pending_agent_resume_deadline = None;
@@ -792,7 +792,7 @@ impl HeadlessServer {
             .start_pending_agent_resumes(self.app.pending_agent_resume_due(now))
         {
             for client in self.clients.values_mut() {
-                client.request_repaint();
+                client.request_recompute();
             }
         }
     }
@@ -1969,6 +1969,7 @@ impl HeadlessServer {
                 mouse_capture,
                 surface_active,
                 surface_reuse,
+                surface_delta,
                 writer,
             } => {
                 if self.handoff_in_progress {
@@ -2015,6 +2016,7 @@ impl HeadlessServer {
                 connection.shell_mouse_capture = mouse_capture;
                 connection.shell_surface_active = surface_active;
                 connection.render_state.enable_surface_reuse(surface_reuse);
+                connection.render_state.enable_surface_delta(surface_delta);
                 connection.shell_projection_revision = 1;
                 let config_diagnostic = if endpoint_keybindings {
                     self.server_config_diagnostic.as_deref()
-- 
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