Twilight Render is a photorealistic rendering plugin that render models right inside sketchup, it was build on the Kerkythea render engine. There is a free demo version available for download, but its functionality was limited compare to the paid version which is priced at $99 USD. The demo version can be downloaded here.
Twilight render provides the following render settings:
- Ray Tracing
- Photon Mapping
- Path Tracing
- Bi-directional Path Tracing
- Metropolis Light Transport
- Clay, Depth, Alpha Mask and more