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View Full Version : GI an AO ... what is the difference?

monem
10-02-2009, 10:36 PM
dear all ... i am still confused between GI and AO ... what is the different between them and when to use what? or may i use the both together? is there any explanation or tutorial? and how to apply this for v-ray?

thanx for co-operation
Rens
10-03-2009, 12:16 AM
Do a search here or on google, there's really a ton of information on it.

http://www.spot3d.com/vray/help/150SP1/vraydirt_params.htm
http://www.spot3d.com/vray/help/150SP1/examples_GI.htm

Here, Global Illumination gives you light bouncing around, as light does this as well in the real world. Ambient Occlusion (dirt map) gives you a map where points that have other geometry close by are darker, e.g. the inside corners in the image.
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