2021 TPV Developer meeting week #31 summary

Cravone City, April 2021 – blog post

The following notes are taken from the TPV Developer meeting held on Friday, August 6th, 2021.

These meetings are generally held every other week.  They are recorded by Pantera Północy, and her video of the meeting is embedded at the end of this report – my thanks to her for allowing me to do so – and it is used with a transcript of the chat log from the meeting and my own audio recording to produce this summary, which focuses on the core topics discussed.

SL Viewer

[Video 1:00-2:32]

No updates to the current crop of official viewers this week, leaving them as follows:

  • Release viewer: version, Fernet Maintenance RC dated July 14th, promoted July 19th.
  • Release channel cohorts:
  • Project viewers:
    • Legacy Profiles viewer, version, dated October 26th, 2020.
    • Copy / Paste viewer, version, dated December 9th, 2019.
    • Project Muscadine (Animesh follow-on) project viewer, version, dated November 22nd, 2019.
    • 360 Snapshot project viewer, version, dated July 16th, 2019.

General Viewer Notes

  • The CEF update viewer is being looked at as the next possible promotion to de facto release status. A decision on this may be taken on Monday, August 9th.
  • The 360 Snapshot viewer update is in progress, but it is still going to be a while before it surfaces.
  • [Video: 4:17-5:25] The Legacy Profiles viewer requires a couple of additional caps on the back-end. This work has yet to be queued, as the focus of back-end work remains on the tools update that is currently in progress; so it will be a while before this viewer is updated.
  • Both the revised Simplified Cache viewer and the Apple Notarisation viewer are both very close to making an appearance, most likely as RC viewers.
  • [Video 5:46-6:18] The new performance controls viewer (ARC, etc.), should be ready for issue as a project viewer in the “not too distant” future.

LOD Generation Viewer

[Video: 2:50-4:15]

A viewer using the mesh optimiser library for automatic LOD model generation for mesh uploads is in development. No date on when it is likely to appear.

This reportedly works better than the GLOD code that is currently in use. For the initial project viewer version(s) of this viewer, once available, creators will have a choice of using either GLOD or the optimiser at upload. Longer-term LL are still discussing whether or not GLOD will be retained as an option, or whether it will be removed (or at the least, made a non-default option).

Beyond this, there is the larger question of using the optimiser library in real time, and what to do with the available content that does not have properly defined LOD models, but this is regarded as “discussion for latter”; the onus at the moment is to make a viewer available that utilises the optimiser library.

Viewer-side Animation Override

[Video: 6:24-6:40]

The ability to run animations normally found in a scripted Animation Override HUD natively from the viewer has been a capability that a number of TPVs offer (animations play viewer-side anyway, so removing the need to operate them via simulator-side scripts helps reduce the script processing load on the latter). It is now the subject of discussions for a viewer-side AO system to be made a part of the official viewer, potentially leveraging what has been done by TPVs.

In Brief

  • [Video 6:50-7:49] As noted in my SUG meeting notes, the new simulator console command that let estate managers change the default EEP settings across an entire estate is now available on regions running on the RC channels, and will be grid-wide after the next SLS Main channel deployment (Tuesday, August 10th). This also paves the way for implementing a new default Mainland EEP setting that will be coming in a future update.
  • [Video 22:46-24:56] BUG-229227 “Offline group invites not working” this issue was the result of removing reliance on UDP messaging (which is not always reliable) and using a capability instead. While some fixes have been made to try to improve things, the code itself is described as a “Byzantine mess”, and in need of a complete re-write There are no time frames when / if this may happen.
  • Caatznip has been continuing investigations in to the cost of rendering Linden Water in cases where it cannot be see (e.g. when standing in the middle of a multi-region estate so it is completely “invisible” under the terrain), and have found that completely ignoring Linden Water rendering via occlusion checks can boost FPS by between 30-50%, with the most notable benefits being with lower-specification systems.

Next Meeting

  • The next meeting should be on August 20th, 2021.

One thought on “2021 TPV Developer meeting week #31 summary

  1. “The ability to run animations normally found in a scripted Animation Override HUD has been a capability that a number of TPVs” Sorry, what’s a TPV again?


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