A Daylight Portal is a special transparent face placed over
an exterior opening or window which causes exterior light to be
processed better. In IRender nXt, Daylight is a set using the Material Wizard
Sky only
This image was rendered for just 1 pass with ordinary openings on
the left and Daylight Portals used on the right. You can see that the
light coming in through the daylight portal is effective starting with
the first pass.
This is the same drawing after just 63 rendering pass. (The improved lighting after the first pass is also a result of Indirect Lighting which adds the effect of light reflecting off of other surfaces during multiple passes.
It would take hundreds of passes for the ordinary opening to process the light from the sky properly.
Sunlight
The images above were made with no sun shining into the window. This image had sunlight, as well as sky and cloudiness.
After 5 passes, the Daylight Portal(on the right) is working fairly well)
Here is the result after 2900 passes. (After lots of passes, the
non-daylight-portal opening on the left converges to match the
daylight-portal openings on the right.
The Daylight Portal on the right has improved as well, but mostly because of the Indirect Lighting effect.
Setting up a Daylight Portal
- Place a transparent Material in, or behind the opening.
- Load the Material Wizard
- Click Plus to load the IRender Plus settings.
- Check Daylight from the Transparency section.