2020 CCUG meeting week #42 summary

La Vie, September 2020 – blog post

The following notes were taken from my audio recording and chat log of the Content Creation User Group (CCUG) meeting held on Thursday, October 15th 2020 at 13:00 SLT. These meetings are chaired by Vir Linden, and agenda notes, meeting SLurl, etc, are are available on the Content Creation User Group wiki page.

There was a lot of general discussion about animation synchronisation, cloud uplift (the majority of which I’ve already reported in my SUG and TPVD meetings of late), etc., none of which should out as really reportable.

SL Viewers

Default Viewer

The Mesh Uploader viewer, version, was promoted to de facto release status on Wednesday, October 14th. This viewer provides additional information on mesh models prior to upload, with contributions from Beq Janus from the Firestorm team and also revisions by the Lab’s viewer team. Cosmetic changes with this viewer include:

  • Upgrade to preview resolution to 1024×1024.
  • Scalable preview window.
  • Fixed display of colours in preview.
  • Adjustment of colours to better correlate to in world (yellow frame of mesh, blue tint physics).
  • Rearrange UI elements to give more space for the preview even when not scaled up.

Informational changes  in this viewer include two new boxes: cost breakdown and physics breakdown – these provide access to information that has always been available to the viewer form the upload costs update message but were not previously shown to the user.

Legacy Profiles

The Legacy Profiles viewer (version at the time of writing) has been stuck awaiting a web-side update, but as the web team are all focused on Uplift work, attempts are being made to work around the delay in order to get the viewer moving again.


  • Work has resumed at looking towards a replacement for OpenGL, particularly as a result of Apple’s plans to deprecate all support for it on their systems.
    • Vulkan had been an option under examination, and additional logging was added to the viewer to help identify how many users are on systems capable of running it.
    • It now turns out that a rather high number of users (up to a 1/3 of all users) are running Second Life systems that do not have support for Vulkan (e.g. those 5+years old, and notably systems with Intel integrated graphics).
    • As a result other options are also being looked at, as is the potential for supporting people on older hardware separately to those using systems capable of running with more recent graphics APIs – although this is an option the Lab would approach with caution, due to the added complexities in maintenance.
  • In addition, the graphics team is looking to see if the viewer UI rendering can be divorced from other aspects of viewer rendering to see if any performance improvements can be obtained by keeping the two separate – currently, a lot of cycles are taken up in the drawing of things like UI panels and buttons.

Jellydoll / ARCTan

  • Vir has been working on some updates to the Project Jelly viewer (version at the time of writing).
  • This viewer is a series of performance improvements related to Jellydoll avatars, and the additional work should be appearing in an update to the project viewer soon. After that, Vir is hoping to completely re-focus on the ARCTan work, which will eventually fold-in the Jellydoll work as well.
  • Should he be able to switch back to ARCTan, the work will remain split between avatar rendering (to be tackled first), and then in-world object rendering to follow along at some point after.
  • The work on avatar rendering will initially be focused on the data gathering aspect and better refining the avatar complexity calculations, followed by UI work to deliver more meaningful and consistent information to users about the rendering impact of their own avatar and those around them.

Date of Next Meeting

  • Thursday, October 29th, 2020.