The basic idea was to provide the Photoshop user with a complete 3D renderer interacting with Photoshop?s layers. Phototracer includes a realtime preview (wire, flat, Gouraud) and a top quality hybrid renderer. Hybrid renderers are a mix of scanline-based algorithms and raytracers. In Phototracer, the raytracer?s first hit is accelerated by a scanline. Following rays are accelerated by an OSS structure (a space partitioning technique). Geometric antialiasing is performed by an A-Buffer, texture antialiasing is performed by bilinear filtering and summed-area tables (SAT). Phototracer also supports bump mapping, instant rendering (same as the G-Buffers in MAX), multiple lights, multiple reflection and refraction levels, has a customized UI, some neat manipulators (virtual sphere and so on), and I just can?t remember everything since that?s a strong feature-packed plug in.