HDRi Sky - Exterior scene with a sky full of clouds.
Incorporate the effects of reflected light, such as the reflected cove lighting above this suspended ceiling.
Indirect Lighting refers to the IRender nXt feature of processing light reflected from mirrors and other surfaces.
This creates a realistic lighting effect which improves with each successive rendering pass. Indirect should be used with most interiors scenes to soften the lighting effects.
Auto Reflection wizard
Auto Reflection makes materials reflective by using a matching word pattern method in the material name. The reflection values for intensity, sharpness, index of refraction, and bump are preset, so reflection values for materials do not have to be individually set.
For example, you can specify that all material names that match the pattern "steel" will be 90% reflective and metallic.
Any assigned materials with names that match the list of patterns, and for which you have not already set specific reflection values, will render with the preset reflection values from Auto Reflection.
(If you do set reflection values for an assigned material, your settings will override the Auto Material settings.)
Self Glow illuminates a surface as if it had light shining on it, without actually making it a light.
For objects which you want to appear bright, but which don't need to illuminate other objects, this is much faster than making lights out of them.
HDRi skies for background, illumination and/or reflection
HDRi Skies are special images to represent skies which contain extra information about intensities of the colors.
HDRi (high dynamic range imaging)is a set of techniques that allows a greater dynamic range of exposures (the range of values between light and dark areas) than normal digital imaging techniques. The intention of HDRi is to accurately represent the wide range of intensity levels found in real scenes ranging from direct sunlight to shadows.
IRender nXt offers support for HDRi Skies - used as visible skies, as sky reflections and for illumination from the Sky.
IRender nXt automatically uses SketchUp transparency settings.
It includes refraction, reflection and illumination through the transparent surface.
You can edit the transparency settings with a slider-bar, change the Index of Refraction.
Daylight effect through windows.
a special transparent face placed over an exterior opening or window which causes exterior light to be processed better.
The left half image on the left has a normal (non-Daylight Portal) opening. It took hundreds of passes to resolve properly. The right half has openings marked as Daylight Portals. The lighting looked this good after just a few passes.