CGTalk - Ambient Occlusion Issue (3DS Max)

View Full Version : Ambient Occlusion Issue (3DS Max)

sketchkj

12-14-2011, 12:52 AM

Does anybody know what is causing my AO render to give this result. My character model looks “shiny” in a sense and I’m getting some really dark areas in only certain corners. I’m using the mental ray shader with ambient occ applied to the surface tab. I’ve been playing around with the max distance, samples, and spread but to no avail. So now I turn to the community for help.

I’m using Max 2010 (64 bit), thanks.

http://i1105.photobucket.com/albums/h356/kchang0708/AO_pass_test.jpg

kanooshka

12-14-2011, 01:32 PM

If you post a screenshot of your Ambient Occlusion settings. It may be easier to help out.

MikeBracken

12-14-2011, 02:15 PM

Looks to me like a smoothing problem. Try adding a meshsmooth mod set to 0 iterations and see if it helps.

Regards,
Mike

israelyang

12-15-2011, 12:01 AM

what's the spread angle? start with a value around 90

d4rk3lf

12-18-2011, 12:22 PM

I think you forgot to increase self illumination to 100% of the AO material.

CGTalk Moderation

12-18-2011, 12:22 PM

This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.