project. The preview renderer in Modo 401 offers progressive rendering, meaning the image resolves to near final image quality if you let it keep running. Modo material assignment is done via a shader tree that is layer-based rather than node-based. As of version 801, node-based shading is a part of the work flow as well. Modo's renderer is a physically based ray-tracer. It includes features like caustics, dispersion, stereoscopic rendering, fresnel effects, subsurface scattering, blurry refractions (e.g. frosted glass), volumetric lighting (smokey bar effect), and Pixar-patented Deep Shadows. Select features Tool Pipe for creating customized tools Scripting (Perl, Python, Lua) Customizable User Interface Extensive file input and output Key modeling features N-gon modeling (subdivided polygons with >4 points) and Mesh Instancing Retopology Tools A powerful sculpting toolset Procedural modeling with "Mesh Operators" MeshFusion (Non destructive subD boolean operations) Key animation features Animate virtually any item's properties (geometry, camera, lights) Layerable deformers Morph target animation Rigging with full-body Inverse kinematics Dynamic parenting Key rendering features Global Illumination Physical Sun and Sky Displacement Rendering Interactive Render Preview IEEE Floating Point Accuracy Subsurface scattering Instance Rendering Physically Based Shading Model Motion Blur Volumetric rendering Depth of Field Network Rendering 3d paint toolset Modo once included imageSynth, a Plug-in for creating seamless textures in Adobe Photoshop CS1 or later. This bundle ended with the release of Modo 301. Luxology has announced that the imageSynth plugin for Photoshop has been retired. References Further reading External links Luxology's Modo 501 at GDC 2011from Intel.com 3D graphics software Global illumination software 3D animation software 3D computer graphics software for Linux Proprietary commercial software for Linux