Filter Forge was released in March of 2007 for the Windows platform. What sets it apart from other plugins is that it allows users to create new filters for the generation of seamless textures, visual effects, distortions, patterns, backgrounds and frames. Filter effects are adjustable and editable, seamlessly tiled, resolution-independent and support real-world HDRI lighting. They can also generate diffuse, specular, bump and normal maps, essential for the creation of realistic textures. Users include graphics pros, game studios, design agencies, photographers, and even the US military, which apparently used Filter Forge to design camouflage patterns.
The freepacks are based on the technology used in Filter Forge and are capable of generating seamlessly-tiled textures with professional-grade anti-aliasing. The Metals freepack provides seven filters for generating realistic metal textures and effects, including Alien Metal, Brushed Metal, Foil, Diamond Plate, Metal Panels, Metalizer and Rust, which renders patches of corrosion over the darker areas of the source image.
Freepack 1 – Metals for Windows can be downloaded at http://www.filterforge.com/download/.