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kray vs lw

Posted: Thu Oct 25, 2012 10:59 am
by medzo
Hi

I guess i have a little too much time on my hands :) kray can render trees and grass with reflection and reflection blurring values (with applying kraysurface options) very fast but lw's renderer takes just way too much time for rendering the same scene. what is the difference between kray and lightwave's native renderer?

Re: kray vs lw

Posted: Thu Oct 25, 2012 2:09 pm
by jure
Well kray has very fast GI, much faster than LW. Also raytracing reflection blurring is much faster in Kray. I don't think there is much you can do in LW to achieve that. I think you should search newtek forums to find out how to setup materials to make them render faster with LW.

Re: kray vs lw

Posted: Sun Nov 04, 2012 11:26 am
by giacob
i am trying in lw 11.5 a scene with ray recusion limit set to 12 ( i need this value because have some glass lamp one behind the other) , and lw render much much much faster than kray..... as a macterr of fact kray is so slow that is almost unusable...
have someone bumped into the same problem? am i doing somethig wrong?

Re: kray vs lw

Posted: Sun Nov 04, 2012 12:53 pm
by Janusz Biela
giacob wrote:i am trying in lw 11.5 a scene with ray recusion limit set to 12 ( i need this value because have some glass lamp one behind the other) , and lw render much much much faster than kray..... as a macterr of fact kray is so slow that is almost unusable...
have someone bumped into the same problem? am i doing somethig wrong?
Setup this shader for grass :wink:

Re: kray vs lw

Posted: Sun Nov 04, 2012 2:11 pm
by giacob
thanks but ...
where do i have to apply the shaders... just on glass surface or on all surfaces?
if i have to apply this shaders an all surfaces would be a very long process!

Re: kray vs lw

Posted: Sun Nov 04, 2012 2:15 pm
by jure
giacob wrote:thanks but ...
where do i have to apply the shaders... just on glass surface or on all surfaces?
Just for grass, or trees or anything that's really small like hair/fur...

Re: kray vs lw

Posted: Sun Nov 04, 2012 2:17 pm
by giacob
but i dont have any grass ... i just have some glass!! ( lamp one behind the other)
perhaps u mean that because of high recursion limit i have to reduce fg rays on small object in order to have the kray go faster?

Re: kray vs lw

Posted: Sun Nov 04, 2012 3:41 pm
by Janusz Biela
giacob wrote:but i dont have any grass ... i just have some glass!! ( lamp one behind the other)
perhaps u mean that because of high recursion limit i have to reduce fg rays on small object in order to have the kray go faster?
For glass minimum recurse is 12 imho. Do not use lower value. Glass need a lot reflections to look good....and this You can not over jump. Try Dielectric Node , is very fast but I think buggy still. Here Node maybe will help You. Generally glass is always big problem and until when Grzegorz will write special shader for glass for Kray will be all the time problem....

Re: kray vs lw

Posted: Sun Nov 04, 2012 4:28 pm
by giacob
i wil try... anyway a i am experiencing any sort of slowness with kray lately...
I am rendering a scene that in lw take 20 minutes and in kray is taking more than an hour.... and i am talking about a 901 x 473 render!!!
is ttha possible? or maybe i have something messy in my config? who knows...

Re: kray vs lw

Posted: Sun Nov 04, 2012 7:43 pm
by Janusz Biela
giacob wrote:i wil try... anyway a i am experiencing any sort of slowness with kray lately...
I am rendering a scene that in lw take 20 minutes and in kray is taking more than an hour.... and i am talking about a 901 x 473 render!!!
is ttha possible? or maybe i have something messy in my config? who knows...
Just post scene to check what is going wrong.

Re: kray vs lw

Posted: Mon Nov 05, 2012 11:15 am
by olahaldor
Considering LW 11.5 still is in beta, who knows what kind of black magic lies behind.... Something to notify the LW3D team about?

Re: kray vs lw

Posted: Tue Nov 06, 2012 9:49 pm
by giacob
This render to 24 hour!! with lightmap,medium setting, dp sksunligt dp sk portal light ( at windows)
Cant figure out why... maybe u are rigt? is there something that dont work with lw 11.03?
Image

Re: kray vs lw

Posted: Tue Nov 06, 2012 10:44 pm
by Janusz Biela
giacob wrote:This render to 24 hour!! with lightmap,medium setting, dp sksunligt dp sk portal light ( at windows)
Cant figure out why... maybe u are rigt? is there something that dont work with lw 11.03?
Image
This quality You can render in Kray UNDER ~ 10-20 min with i7 CPU

Re: kray vs lw

Posted: Tue Nov 06, 2012 11:52 pm
by giacob
so why the hell is taking so long.... i have an i72700k.... cant figure out

Re: kray vs lw

Posted: Wed Nov 07, 2012 12:07 am
by Janusz Biela
giacob wrote:so why the hell is taking so long.... i have an i72700k.... cant figure out
Post Your Kray setup file.