Fresnel And Specular Falloff

[schmu_20mol]

well i'm originally from lw but as far as i understand it fresnel in maya are made out of a phongE with a ramp (U Ramp; Linear) set before.....hope that helps you at least a bit

[lricho]

To get the fresnel effect, you can create a ramp and a sampler info node, connect the facing ratio attribute of the sampler node to the u and v coord attributes of the ramp node. You need to use the connection editor to do this. Then just connect the ramp outColor or outAlpha to whatever you need to in your shader. The ramp will be a black to white gradient for what you are wanting.

[mattwood]

If you use a Blinn material the Specular Roll Off attribute controls the fresnel effect. Lower values give a stronger effect.

[Milho]

what Iricho said is also described here http://www.cgtalk.com/showthread.php?s=&threadid=41932
with a picture :thumbsup:

[Kaiser_Sose]

Originally posted by Milho
what Iricho said is also described here http://www.cgtalk.com/showthread.php?s=&threadid=41932
with a picture :thumbsup:

Is there a specific one you are referring to



Thanks

[Milho]

http://www.cgtalk.com/attachment.php?s=&postid=388063

The first one....
:thumbsup:

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