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March 23, 2010
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HDRI and AO Tutorial - BASIC by grico316 HDRI and AO Tutorial - BASIC by grico316
This is a tutorial I made for :iconth3-r4thal0s-k1ll3r:

Update 3/24/10 @ 8:00 a.m.
Added information and fixed errors. Changed graphics.
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Daily Deviation

Given 2012-11-16
:iconjoojaa:
joojaa Featured By Owner Nov 16, 2012
Your not actually supposed to multiply occlusion in like this. The thing is it sometimes works and does get pleasing imagery, but wrong nonetheless. This makes it really dangerous advice. So how are you supposed to use it then? That depends on what you model.

You could be modeling the ambient lightning, in which case you should add range your ambient color by occlusion. The ranging is done by multiplication of the ambient color of your surfaces than that is added to the reflection pass. In your image the occlusion works right for the floor but not much else. Its really important as just multiplying on top of tube for example leads to too dark interiors whereas its really only simulating the light of the sky/surroundings. Which is added with other lights.

You could be modeling dirt, in which case it is multiplied iwth the texture color, of ambient and diffuse but again not multiplied with reflections for example.

Or you could be doing reflective occlusion which is much harsher then its applied to the reflective channel but not interacting with the other parst of the image.

PS: misuse of ambient occlusion si number one reason for the very clearly cg look along with infinite depth of field.
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:icongrico316:
grico316 Featured By Owner Dec 24, 2012  Hobbyist Digital Artist
Cool thanks for the intel. I havent used this technique for a long time now. Everything works differently in Vray so I agree this doesnt work in all situations.
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:iconfragilebutts:
FragileButts Featured By Owner Nov 16, 2012  Student Traditional Artist
huh
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:iconsnowfeatherr:
snowfeatherr Featured By Owner Nov 16, 2012  Hobbyist General Artist
Wha................?
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:iconhalfmoon23:
HalfMoon23 Featured By Owner Nov 16, 2012  Hobbyist Digital Artist
ooook
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:iconmejinomaru:
Mejinomaru Featured By Owner Nov 16, 2012  Student Filmographer
wow how long did this take your comp to render out havent did anything in 2ds max in a long while since college really but this is amazing
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:icongrico316:
grico316 Featured By Owner Dec 24, 2012  Hobbyist Digital Artist
A few seconds
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:iconvitoe:
vitoe Featured By Owner Nov 16, 2012
Thanks... nice tutorial
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:icongrico316:
grico316 Featured By Owner Dec 24, 2012  Hobbyist Digital Artist
thanks
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:iconamazingvivid:
amazingVivid Featured By Owner Nov 16, 2012  Hobbyist
Thank you))
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