reflections

[carlos_ramiro]

Hello

I've been reading Ted Boardman's article in Cgarchitecs.

http://www.cgarchitect.com/upclose/a...9_TB.asp<br />

He works with reflections and attenuation with a raytrace material and scanline in MAX.

My question is, how can i work with this with Vray? Working whit vray and raytrace materials seems does not work.

Working with vray material i can't find the attenuation, and also the global raytracer settings looks no working.

thanks

[percydaman]

vray doesn't use the max raytracer. Use the vray material. Personally, I dont miss raytrace attenuation, as vrays raytracer is so much faster than max's that its unneccesary. And I use the falloff map to achieve less reflection based upon incidence angle anyways.

[J_Bug]

I was always under the impression that attenuation was something that happened automatically due to reflection amount and glossyness.

--Jon

[percydaman]

no I think attenuation is different. Isn't it kind of a trick anyways?

[geenyus]

The only time I really ever used attenuation (pre-vray, of course) was to reduce render times by limiting how much the raytracer "saw" and had to reflect. Also, attenuation created an effect similar to glossy reflections, but it was always just a workaround...

I'm perfectly happy with vray's reflections as is, and in my opinion, it would only limit the realism of a scene by attenuating the reflections.

[DP]

the want of attenuation for us has cropped up a few times as it can speed up rendering of scenes where complex geometry needs to be reflected close by but not by objects far away...glossiness achieves this by blurring but i suspect its still calculating the effect on objects far away even though the wont be seen. Would be nice to have as a feature just when the need does arise.