The Lab has already carried out a fair amount of performance tuning with ALM, and at the TPV Developer meeting on Friday June 28th, Oz Linden reported that further work is going on in this area, which will include some profiling of the shaders in order to try to further improve performance.Ĭurrently, and as previously reported in these pages, the Cool VL viewer experimental branch and the Black Dragon 2.2.3 beta both provide materials processing capabilities.
However, given that fps is a highly subjective measure and somewhat dependent on a range of external factors (such as how many other avatars are in the region with you, whether you are moving around a lot or not, etc), the “YMMV” rule comes into play. The latest stats the Lab has on viewers show that some 30% of users are currently running with the Advanced Lighting Model option (ALM – otherwise known as deferred rendering), and are thus able to see materials in use in-world, although the stats also appear to indicate that up to 75% of the user base have hardware capable of running with ALM enabled, “with reasonable performance” in terms of frame rates (e.g. Materials continues to be updated and refined, and the Lab is gathering stats on viewer use with ALM enabled The initial fixes for these issues are considered important for TPVs to pick-up when integrating materials into their viewers, while follow-up releases (such as the new 824 beta viewer released on June 25th, being viewed as slightly less important at this time. As reported in part 2 of this update, the release viewer was updated on June 27th with a release containing a number of updates and fixes, including some for materials, such as occlusion culling is less effective than it should be, especially with regards to very large objects light function sampling being incorrect in advanced lighting model and the legacy Shiny options being overly strong in deferred rendering.
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