Keep up-to-date with Free tutorials!!

 

Sign up to our twice-monthly newsletter today for the latest tutorials, interviews and product information.

Sign me up to receive third-party emails from 3dtotal's partners, too!

- Latest news
- Exclusive Shop Offers
- Preview early content
- Plus much more

 

Not Ready to take that step? OK, Why not just Subscribe to the RSS Feed

 
submit tutorial
1 | 2
Ambient Occlusion with Alpha

| Your Rating:
rating star fullrating star fullrating star fullrating star fullrating star full
(1 Votes)
| 29092 Views
| 0 Comments
| Comments 0
Date Added: 9th December 2009
Software used:

531_tid_Fig06.jpg
Fig. 06

This new mental ray material with an ambient/reflective occlusion map needs to be applied on to any other object in the scene which is not using an opacity map. Once this is done, hit render. Your render should look something like what is shown below in Render01.

531_tid_Render01.jpg
Render 1


In this first instance the scene will look very noisy, because the sample rate under the ambient/reflective occlusion map is default at 16, so change this value to around 128 to make your scene less noisy, as shown below (Render02).

531_tid_Render02.jpg
Render 2

The whole ideology for me showing this tutorial was imagining that have a huge scene with some 100s of materials applied to the objects, out of which 20 materials are applied to the plants or trees, or any other object that has opacity to this. Using this method you can simply apply one ambient/reflective occlusion map to all the materials with opacity, and make a new mental ray material for the rest of the objects not with any sort of opacity. In one of my personal scenes I had a really hard time getting ambient occlusion with alpha. Using all the different plug-ins gave me lots of problems! However, in the end I found this procedure to be very stable, even in the bigger scenes, without any errors or crashes! I hope this will be a great help to you guys also in the creation of your own scenes.




< previous page
 
1 | 2
Related Tutorials

Carving wood textures

by Hugo Beyer
published on 2015-03-18

Keywords: Wood, sculpt, ZBrush, Maya, texture

Go to tutorial
rating star fullrating star fullrating star fullrating star fullrating star half (7)
Comments 0 Views 21233

Lightmap based Ambient Occlusion - Faking FG with sampled Lightmap and AO shader

by Vladimir Jankijevic
published on 2009-12-09

Keywords: lightmap, ambient, occlusion, ao, softimage, xsi,

Go to tutorial
rating star nonerating star nonerating star nonerating star nonerating star none (0)
Comments 1 Views 15681

Fast Ambient Occlusion in 3ds Max

by Tom Isaksen
published on 2010-11-16

Keywords: texture, texturing, ambient, occlusion,

Go to tutorial
rating star fullrating star fullrating star fullrating star fullrating star none (21)
Comments 12 Views 119492

Gavin Goulden #10 Modifying Alphas

by Gavin Goulden
published on 2014-08-08

Keywords: ZBrush, Alphas,

Go to tutorial
rating star fullrating star fullrating star fullrating star fullrating star full (2)
Comments 0 Views 11236
Readers Comments (Newest on Top)
no comments!
No comments yet. Be the first to comment!
Add Your Comment