Headlight material problems "2"

[CreArte]

Hi all,

Have had this problem for a long time and have been dealing with it in post production but have read in the forum others have had the same issue, have tried all recommendations specially followed this one http://www.chaosgroup.com/forums/vbu...eadlight+glass but haven't got satisfied yet with the results.

The glass cover object is a solid two faced piece and about 1.5 millimeter, have tried several glass material options, set max depth over 20 and nothing happens, have tried also to manipulate the VRay properties for the objects behind the glass cover increasing the receive GI but result is not good. Also tried cast shadows on and off on both material and object properties.

The scene setup is quite simple, I have three lights that cast diffuse and specular one of them is a dome light and a plane above the car for reflections, as you can see in the images the one "without glass cover" shows everything very acceptable but when I place the glass cover all the objects behind it loose reflections and look dark.

Any help will be much appreciated

Regards

[joconnell]

Turn on affect shadows in the refraction parameters of your material, otherwise vray won't use the transparency of the glass and allow light through your object.

[CreArte]

I have done that as well, the glass cover has cast shadows turned off so in my believe it should not affect the objects behind but definitely there is an improvement. The result is very similar.



thanks for helping out, look forward for more comments please....

[Morbid Angel]

do you mind attaching part of the headlight and your setup here so we can investigate.

[CreArte]

Sure, here is the link
Thanks for your help

[Morbid Angel]

object - Plane01, is set to invisible in refraction under vray object properties if you set that back, the light renders as expected.

[CreArte]

so that was it! thanks Dmitry, lol I feel clumsy.... will have to change a big part of my workflow just for that tiny detail.

[CreArte]

here is the final result it went back to life, Dmitry again thanks a lot you were of great help.
cheers

[Morbid Angel]

no prob, when I test rendered your scene that was the first thing I thought to check. What would you have to change in your workflow ?

[CreArte]

I had that value turned off because If some portion of a reflection plane is visible through a car window it will produce an unwanted look, but that is simple to fix, I mean it is a small change in my work flow that I have to be aware of now but I have already won a lot of time just by fixing the headlights refelction thanks to your help. (sorry if my english is a bit confusing).