with v2.1. Following Autodesk's 2008 purchase of all of the Softimage 3D business assets and the Softimage brand from Avid, Softimage|DS was rebranded AvidDS. Avid continued to sell the solution until 2013. Softimage|XSI The software which would become Softimage|XSI was unveiled in 1996 under the code name Sumatra along with RenderFarm, a Sumatra module which was never released. In 1997, a company announcement mentioned Twister, a rendering module of Sumatra. Twister was officially announced at SIGGRAPH in 1998 as the first module of the still-unreleased Sumatra. However, Twister was later canceled to allow the company to focus on Sumatra. The 1999 campaign "Animation R3defined" was the presentation of Sumatra as the first "Non-Linear 3D animation" system The Animation Mixer, which allows manipulation of animation as clips on tracks, similar to video non-linear editing system like Avid Media Composer. Softimage|XSI finally had its v1.0 release in 2000 and included new generation architecture, user interface, workflow, etc. as well as ActiveScripting, Interactive Rendering (Render Region), Rendering Passes, Render Tree, GAP (Generic Attribute Painting), Surface meshes (Nurbs networks), Non-linear animation – Animation Mixer, and Integrated Particles features. The 1.0 release was followed later the same year with v1.5 which added Polygonal modeling, Subdivision Surfaces, and texturing tools as well as Animation Clip Effects/Offsets, Equalizer, Bridge Transitions, Scripted Operators (scripted plugins), Soft-Bodies, Cloth, Fluids (from Phoenix Tools), and the SDK Object Model (COM). While v1.5 was released in 2000, it didn't start shipping until 2001. In the same year at SIGGRAPH the company announced Softimage|XSI v2.0 which introduced a fully integrated compositor, based on Avid Media Illusion, and a Hair and Fur module, based on Joe Alter's Shave. Version 2.0 which was released later that year also brought with it support for Linux (previously, supported unix was SGI IRIX) and Electric Rain collaborate to bring Flash, EPS, AI and SVG exports to SOFTIMAGE|XSI customers. The company released the SOFTIMAGE|XSI Experience for v2.0 in 2002. This was a free educational software and training kit. Alias had previously released a Personal Learning Edition of Maya, a Softimage competitor. Also in 2002, Softimage released Softimage|XSI v3.0 which was an evolutionary update but introduced Softimage|Behavior, a procedural animation system, marketed as a new Crowd Simulation engine. This was a re-branded version of a product called Motivate developed by Softimage's 2000 acquisition, The Motion Factory. Softimage released version 3.5 of Softimage|XSI in 2003 which updated Softimage|Behavior to version 1.1