Merge pull request #3911 from secondlife/main

Merge 2025.03 release into develop.

1 files changed, 33 insertions, 2 deletions

diff --git a/indra/newview/llviewermessage.cpp b/indra/newview/llviewermessage.cpp
index d47a7ffa83..3b16708091 100644
--- a/indra/newview/llviewermessage.cpp
+++ b/indra/newview/llviewermessage.cpp
@@ -3163,7 +3163,9 @@ void send_agent_update(bool force_send, bool send_reliable)
     LL_PROFILE_ZONE_SCOPED;
     llassert(!gCubeSnapshot);
 
-    if (gAgent.getTeleportState() != LLAgent::TELEPORT_NONE)
+    LLAgent::ETeleportState tp_state = gAgent.getTeleportState();
+    if (tp_state != LLAgent::TELEPORT_NONE
+        && tp_state != LLAgent::TELEPORT_ARRIVING)
     {
         // We don't care if they want to send an agent update, they're not allowed
         // until the target simulator is ready to receive them
@@ -3338,7 +3340,36 @@ void send_agent_update(bool force_send, bool send_reliable)
     msg->addVector3Fast(_PREHASH_CameraAtAxis, camera_at);
     msg->addVector3Fast(_PREHASH_CameraLeftAxis, LLViewerCamera::getInstance()->getLeftAxis());
     msg->addVector3Fast(_PREHASH_CameraUpAxis, LLViewerCamera::getInstance()->getUpAxis());
-    msg->addF32Fast(_PREHASH_Far, gAgentCamera.mDrawDistance);
+
+    static F32 last_draw_disatance_step = 1024;
+    if (tp_state == LLAgent::TELEPORT_ARRIVING || LLStartUp::getStartupState() < STATE_MISC)
+    {
+        // Inform interest list, prioritize closer area.
+        // Reason: currently server doesn't distance sort attachments, by restricting range
+        // we reduce the number of attachments sent to the viewer, thus prioritizing
+        // closer ones.
+        // Todo: revise and remove once server gets distance sorting.
+        last_draw_disatance_step = llmax((F32)(gAgentCamera.mDrawDistance / 2.f), 50.f);
+        msg->addF32Fast(_PREHASH_Far, last_draw_disatance_step);
+    }
+    else if (last_draw_disatance_step < gAgentCamera.mDrawDistance)
+    {
+        static LLFrameTimer last_step_time;
+        if (last_step_time.getElapsedTimeF32() > 1.f)
+        {
+            // gradually increase draw distance
+            // Idealy this should be not per second, but based on how loaded
+            // mesh thread is, but hopefully this is temporary.
+            last_step_time.reset();
+            F32 step = gAgentCamera.mDrawDistance * 0.1f;
+            last_draw_disatance_step = llmin(last_draw_disatance_step + step, gAgentCamera.mDrawDistance);
+        }
+        msg->addF32Fast(_PREHASH_Far, last_draw_disatance_step);
+    }
+    else
+    {
+        msg->addF32Fast(_PREHASH_Far, gAgentCamera.mDrawDistance);
+    }
 
     msg->addU32Fast(_PREHASH_ControlFlags, control_flags);