It finally happened.
As @
Ai Austin has reported on his blog,
OpenSim 0.9.3.0 was released on November 8th. The current stable releases of both OpenSim itself and the Firestorm Viewer have PBR support now.
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OpenSim #
OpenSimulator #
Metaverse #
VirtualWorlds #
PBR #
PhysicallyBasedRendering