NXt Rendering Modes
The Path Tracer is a new, alternate rendering engine for IRender nXt.
You can render with either nXt Packet Mode or nXt Path Tracer mode.
Packet Mode vs Path Tracer
nXt Packet Mode processes packets of rays, while nXt Path Tracer processes individual light paths.
Because of some shortcuts, such as Daylight Portals , and other aspects of the rendering process, nXt Packet Mode create a usable image in fewer passes. nXt Path Tracer often requires more passes before the image gets smooth. In many cases individual passes in nXt Path Tracer are faster, however the overall rendering process may take longer to complete.
Here are two renderings of a scene after just two passes. nXt Packet Mode produces a smooth image after just tow passes, while nXt Path Tracer has quite a bit of graininess which will converge during later passes.
Both of these renderings took several hours. You can see differences between the renderings - such as the reflected light from the ceiling lights on the ceiling which is smoother in the Path Tracer rendering.