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 | 3 | 4 | 5
DGS Exploited

By Florian Wild
| Your Rating:
rating star nonerating star nonerating star nonerating star nonerating star none
(0 Votes)
| 46944 Views
| 0 Comments
| Comments 0
Date Added: 9th December 2009
Software used:
Maya, mental ray

Jackpot!
But what about the indirect illumination (irradiance), like if we used finalgathering for example?
Let's see:

FG on, all settings same as in the last image:

500_tid_image_06.jpg

Ugh! What happened? Lamrug.org gave me the answer:
http://www.lamrug.org/resources/mayafgtips.html. When a shader gathers irradiance with mi_compute_irradiance, it should normally divide the result by Π, since the irradiance is the energy gathered over the hemisphere above that point. Dividing by Π makes it a color at the point.

So the irradiance is being divided by pi already (this does not apply to maya 5 and earlier). Our irradiance is now actually divided 2 times, because 'Diffuse' is multiplying our irradiance as well - not good. But we can overcome this by a simple trick: we just multiply the irradiance by pi again. By clicking on the 'Irradiance Color' (NOT 'Irradiance'!) the color picker pops up. We then replace the 1.000 in the 'Value' field by pi (3.1415):

500_tid_image_07.jpg




< previous page next page >
 
1 | 2 | 3 | 4 | 5
Related Tutorials

Tutorial

Gallery Image.



Keywords: Textures, tiling, tutorial

Go to tutorial
rating star fullrating star fullrating star fullrating star fullrating star half (8)
Comments 0 Views 31125

Tutorial

Gallery Image.



Keywords: hand painted, tileable, textures,

Go to galleries 1
rating star fullrating star fullrating star fullrating star fullrating star none
Comments 0 Views 14120

Tutorial

Gallery Image.



Keywords: scene, total, textures, world,

Go to galleries 1
rating star fullrating star fullrating star fullrating star fullrating star half
Comments 2 Views 110506

Tutorial

Gallery Image.



Keywords: render, passes, diffuse, specular,

Go to galleries 1
rating star fullrating star fullrating star fullrating star fullrating star full
Comments 2 Views 145464
Readers Comments (Newest on Top)
no comments!
No comments yet. Be the first to comment!
Add Your Comment