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Glossy Mat IOR attribute

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Glossy Mat IOR attribute

Post Sat Jun 06, 2015 8:13 pm

http://filmicgames.com/archives/557

Why Yafaray glossy material hasn't this attribute ?
kenanaybati
 
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Re: Glossy Mat IOR attribute

Post Sun Jun 07, 2015 5:35 am

I agree, in fact I have open an issue about it:

http://yafaray.org/node/571

The problem is that the current Glossy algorithm is limited. We probably should try to implememt a better and more realistic one that has IOR capabilities, etc.

For now as a workaround please try Coated Glossy which has IOR control. In v0.1.99-beta3 I also added more features to it for more fine control and texturing. See: http://www.yafaray.org/community/forum/viewtopic.php?p=31139#p31139
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David Bluecame
 
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Re: Glossy Mat IOR attribute

Post Sun Jun 07, 2015 1:58 pm

Thanks David.

Will you add new features ? Render Elements would be great.
kenanaybati
 
Posts: 34
Joined: Sun Mar 03, 2013 3:34 pm
Location: Istanbul

Re: Glossy Mat IOR attribute

Post Sun Jun 07, 2015 7:21 pm

I suppose that Render Elements is the same as Render Passes? (render separately dorect light, reflection, etc)?

I also believe YafaRay needs such a feature. However that would require a big rewrite of the code. I don't know yet enough of the internals of YafaRay to try such a change, but it's something I would like to try in the medium-long term.
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David Bluecame
 
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Location: Spain

Re: Glossy Mat IOR attribute

Post Tue Jun 09, 2015 4:29 pm

I think glossy material has got some kind of fresnel effect in it and this effect probably depends on some glossy parameter, either roughness, reflection strength or both.
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Samo
 
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