Bella Render is a spectral physically-based rendering engine developed by Diffuse Logic, a software company based in Barcelona, Spain. It has native plugins for Autodesk Maya, Rhinoceros 3D, and SketchUp, and also a stand alone program called Bella GUI that can import supported files for rendering. Bella has a demo mode that is unlimited time and free that allows up to 1080p rendering with a watermark.
Compatibility.
Bella for Rhino.
Bella has a plugin for Rhinoceros 3D for interactive real-time rendering. The plugin supports Rhino’s native geometry, materials, and lighting, while also allowing the assignment of Bella specific materials and render settings.
Bella for Maya.
The Bella plugin for Autodesk Maya provides real-time rendering and uses Maya's native node based modeling system along with Bella's assets for materials, cameras, and lighting.
Bella for Sketchup.
The Bella for SketchUp plugin allows for materials and lighting from Bella right in the Sketchup environment, but does not have node based controls, there is a bridge that exports to Bella GUI for more advanced Bella settings for rendering.
Bella GUI.
Bella GUI is a stand alone application for exporting files to Bella GUI for more advanced native controls like node-based rendering, material editing, and lighting.
File formats supported.
Import file formats supported to Bella GUI include OBJ, FBX, DAE, 3DS, and STL.