'3D Studio Max'

'Fast Ambient Occlusion in 3ds Max'
by Tom Isaksen
 
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The shader should look something like this now (Fig.05).

3d studio max, fast, ambient, occlusion, mapping, techniques, photoshop
Fig.01

Step 2: Assign to Render :

Open the Render Setup menu (F10), then click the Processing tab, find the Material Override option and click Enable. You can now drag and drop the material you just created onto the Material:None button. Chose Instance to make sure the material updates when you change the settings (Fig.06).

3d studio max, fast, ambient, occlusion, mapping, techniques, photoshop
Fig.06



3DTotal_intro_to_Rigging


Click Render (Fig.07)!

3d studio max, fast, ambient, occlusion, mapping, techniques, photoshop
Fig.07

And you will probably see a more or less completely white render. The default values assigned to the material are not optimal for what we want to do. Please note: if your render is black, try to set your exposure control to No Exposure Control in the Rendering > Exposure Control menu.

Find the Max Distance value and increase to let say 100. And the render again (Fig.08).

3d studio max, fast, ambient, occlusion, mapping, techniques, photoshop
Fig.08

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Your rating:  
  Rating: 3.90, Votes: 20 
Vladimir Jankijevic on Tue, 16 November 2010 9:22pm

I'm sorry but if you've read that post by Master Zap, you'll see that your technique isn't quiet right and is missing the point of ambient occlusion.
here is the link to the post: http://mentalraytips.blogspot.com/2008/11/joy-of-little-ambience.html
Tom Isaksen on Wed, 17 November 2010 10:05am

Actually Vladimir, the point is to make it easy and quick, particular if you NOT just using Arch & Design shaders.. But you are right, it's not a physically correct Ambient Occlusion effect, and I suppose I could have stressed that more in the tutorial. So thanks for pointing it out.
Tim on Sun, 09 January 2011 11:00pm

also, you can disable final gather for your ambient occlusion pass, makes it at least slightly faster.
Grant Salisbury on Mon, 28 January 2013 2:13am

A great way to do this quickly is to use this script.
Quick Passes
http://www.scriptspot.com/3ds-max/scripts/quick-passes
Great for quick mattes and lighting as well as ao passes.

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