You may not have noticed the Graphics Setting feature: Global Illumination. It began appearing in viewers some time ago. But, now it has disappeared from the SL Viewer. So, what’s up?
What it is…
Global Illumination is the label used to describe how light is handled in 3D games. Its purpose is to make lighting more realistic. It adds ‘reflected’ light effects. This means if you are standing with a blue wall to the right and the sun to the left, some blue light will be reflecting on to your right side.
Status
Back in May 2009 the Lab, Runitai Linden, posted a video showing new features they were working on. See: SL Tech Demo above.
The video (above) includes Mesh and Global Illumination. At about 1:34 in the video you can see a sun cycle that shows an example of Global Illumination. (GI) Notice how the sun seems to reflect off surfaces and illuminate other surfaces. That is the Global Illumination.


