YafaRay is a free open-source raytracing engine. Raytracing is a rendering technique for generating realistic images by tracing the path of light through a 3D scene. This package is built by default with QT4 support (needed if you intend to use the blender plugin too). If you don't want it, launch the script as follows: # USEQT=no ./yafaray.SlackBuild (assuming you're root) You can also build Python bindings, provided you have swig and Python installed. Simply run # BUILDPYTHON=yes ./yafaray.SlackBuild (always assuming you're root)