2026 week #18: SUG meeting summary

The following notes were taken from the Tuesday, April 28th, 2026 Simulator User Group (SUG) meeting. These notes form a summary of the items discussed, and are not intended to be a full transcript. They were taken from the video recording by Pantera, embedded at the end of this summary – my thanks to Pantera for providing it.

Meeting Overview

• The Simulator User Group (also referred to by its older name of Server User Group) exists to provide an opportunity for discussion about simulator technology, bugs, and feature ideas is held every other Tuesday at 12:00 noon, SLT (holidays, etc., allowing), per the Second Life Public Calendar.
• The “SUG Leviathan Hour” meetings are held on the Tuesdays which do not have a formal SUG meeting, and are chaired by Leviathan Linden. They are more brainstorming / general discussion sessions.
• Meetings are held in text in-world, at this location.

Simulator Deployments

• No deployments planned for the week, although all server channels will be restarted. The pause is to allow for more adjustments to be made to WebRTC prior to it going grid-wide.
• There will be a new simulator update  – called Kumquat – which will contain the necessary infrastructure updates for the above, and which will be deployed ahead of the planned next simulator release (Loganberry).

In Brief

• LL have added a new cap that delivers pre-generated configuration files for the Lua definitions and the viewer and the VS code plug-in are being updated to support this. These updates will allow for the removal all the language definition munging from the plug-in itself.
• Leviathan Linden:
  • Has been working on updates related to the new Kumquat simulator update and “some related back-end services.
  • Had no progress to report on for game_control, and is hoping to get back to it soon.
• Harold Linden (SLua):
  • Has been bundling up all the scripting-related definitions in a sensible way so they can be served.
  • Has also been working to complete the prim params builder RFC. He views this work as complete and warns that those will any input should “speak now or forever hold your peace”, as he will shortly start implementing it.
  • Harold noted that the prim params does it allow to set ‘nil’ or not provide a value or something else that would do “keep current” behaviour; it is strictly a wrapper around SetLinkPrimitiveParamsFast. He noted that requested work such at this would require an overhaul of SetLinkPrimitiveParamsFast.
  • The above formed the basis for a discussion through the meeting.

General Discussion

Please refer to the video below as well.

• The request for llGetRegionWorldMapTile was raised. Apparently, Brad Linden has indicated implementation could be more complicated, suggesting LL should set up a web API that provides the map tile textures and make it possible for people to enable web on a prim for trusted domains.
  • The above led to a discussion on map tiles and options around the basic idea contained in within the feature request – such as making map tile textures function in a similar manner to Bakes on Mesh (using UUIDs – although the scale of this when using thousands of regions could be difficult / complicated).
  • This discussion went on through most of the meeting – please refer to the video below. The most positive idea given the amount of suggestions / confusion over map tiles, was for a design document to be put forward to allow focused discussion.
• There was a report of issues with Vivox Voice service repeatedly failing at Fantasy Faire – notably within the Lost Pages region, home to the Literature, Film and Theatre festivals.
  • The Voice teams indicated they were not aware of any specific instability issue with Vivox – with the caveat the focus has been on WebRTC.
• The question was if there are any plans to re-allow residents to upload animations with animation constraints (apparently turned off when it was found that there was no validation for chain length, which could cause a null pointer error if it goes too high up the skeleton). It was felt this has useful constraints such as “GROUND” which allow the feet to automatically IK feet to the ground, reducing the issue of an avatar  floating off the ground on un-even surfaces.
  • Currently, there are no plans in this direction at present.

Date of Next Meetings

• Leviathan Linden: Tuesday, May 5th 2026.
• Formal SUG meeting: Tuesday, May 12th, 2026.

† The header images included in these summaries are not intended to represent anything discussed at the meetings; they are simply here to avoid a repeated image of a rooftop of people every week. They are taken from my list of region visits, with a link to the post for those interested.