Window glass with no thickness?

V-Ray V-Ray for 3ds Max General
1

Hi all, after about a year doing vray, this is my first post

I’m gonna need your advices. Will there be any problem (artifact, missing reflection on back side, strange reflection, etc) if I make a single plane window glass (with no thickness) and set the material refraction IOR to 1.00 ?

There’s this quite big mix use apartment/hotel block I’m doing now, so I need to plan ahead the modelling, as making all window glass having thickness would be more tedious…

all other material setting for the glass is:
Diffuse : dark grey (about 50,50,50)
Reflection : (250,250,250), Fresnel ON, Reflection IOR=1.6 (unlocked)
Refraction : (250,250,250)
affect shadow & alpha : ON
no glossiness

thanks in advance,

Harry G

2

Welcome :smile:
if you put 1.0 as IOR value, you’ll have no refraction, so your glass will be totaly transparent without réfraction déformation.
You will haven’t any artifact with a single plane IMO

3

just make sure you tick “reflect on both sides” in the material options if it doesnt render out correctly. I think this may only apply to solving problems on glass with a thickness where the normals are facing the wrong way on one of the planes though

4

thanks for the tips guys!

when i set the refract IOR to 1.0, the sample in the material editor turns black… is that okay? looks ok though when i tried to render

Harry

5

that’s ok for the black preview.

6

I thought there was a bug with having the refract value at exactly 1.0

It makes sense anyway, since even air refracts at something like 1.001. i don’t remember the exact number, but it’s something like that.

7

i’d rather put a shell modifier over all windows.
1-plane window is an ugly hack.
it’s for the rays like entering a solid body with no exit.