View Full Version : direct irradiance pass in 2009?


highpoly
11 November 2009, 12:28 AM
I was wondering how this pass is used for comping. When i use diffuse and indirect passes together in my NUKE comp, the lighting result matches the RBG exactly. I tried to add the direct lighting (which i can see is just the direct light in the scene) but then blows it all out. How and why is this pass used/needed? maya 2009..

thanks

kiryha
11 November 2009, 11:43 AM
I use this pass for cuting occlusion from direct illuminated areas.

ruddiger52
11 November 2009, 09:05 PM
I think it might be for if you are comping on a ambient color pass that has no lighting info. I have run into the same issue, it is not intuitive that the diffuse pass does not include the indirect lighting but does include the direct lighting.

highpoly
11 November 2009, 09:58 PM
yea, after some playing around and research, it seems the

diffuse pass = direct irradiance + material color

I guess if wanted to separate those out for more control....

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11 November 2009, 09:58 PM
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