Oh So Big Textures - PBR Terrains and Mirrors

moving forward from 2011

In case you missed the official post on all this --- it is here.

Note that these functions are part of the Linden viewer and not yet into Firestorm.  2048 textures cost 50 lindens for non premium with discounts for premium and premium plus.   

Adding this tutorial on making a simple prim mirror so that I can find the info whenever I get a PBR viewer LOL