I’m pretty new to vRay and I’m having a heck of a time getting the glass reflections right.
A description of the problem (sorry - can’t upload to a site):
I have quite a simple setup. A curtain wall of glass using the glass material from the vRay library. Opposing that wall there’s some things that should be reflecting. The reflection looks pretty decomposed. Large squares all over blocking the reflection on the glass and other squares letting the reflection through. Totally useless. The scene is lit with an HDRi and a vRay light.
The geometry is two planes offset 2,5cm to each other. The normals pointing outward. I have moved the model so 0,0,0 is in the middle as was mentioned in another posting here - didn’t help. I have tried moving the glass object slightly - didn’t help. I have tried turning up the number op interpolation samples on the glass materials reflection and the refraction - didn’t help.
If anybody has input I would greatly appreciate it.
i think what your problem is that you are using two planes as glass ?
rather than planes use to boxes with the proper thickness of your glass, so the light can go into the glass and bounce around.
the glass actually started out as boxes as you described. reducing the glass object to two parallel planes was just another thing I tried to remedy the situation.
remodeling is out of the question due to time so it looks like i’ll use another program to render it. vRay has wasted quite alot of my time so far but i guess that’s one of the joys of learning.
all you need to do is turn off the reflect on back side option. and why would remodeling the glass take so long? isnt that the only thing that was messing up? an image of your setup and scene would help us see the problem
i’ve tried that - didn’t help. it’s a curved facade and instead of using more time on a program that has let me down 2 out of 2 times i’d rather play it safe with Lightscape and get back to vRay when they get the bugs fixed.
by the way: in vinces post someone mentioned there was a bug in version 1.45.20. as far as i know the latest version is 1.09.03r. am i missing something??
its to bad you can’t upload an image or the scene file itself.
I ran into something similar recently. Nothing I knew seemed to apply.
I checked to see if there were coincident faces and there were none. I checked the vray raytrace settings and everything was fine. Then I checked to see if there were frozen objects in the scene that did not show in the view port. Ah hah, I had continued work on a file someone else had started and they had the “hide frozen objects” box checked. These frozen objects did not show in the view port but they most certainly showed in the render. Coincident faces! After deleting the frozen objects everything was fine.
i’ve tried that - didn’t help. it’s a curved facade and instead of using more time on a program that has let me down 2 out of 2 times i’d rather play it safe with Lightscape and get back to vRay when they get the bugs fixed.
These “bugs” don’t seem to bother other users. Have you never seen any renderings from vray with the same type of glass setup you are using? Did those renders look bad? Are you trying something nobody else has ever tried to render?
I had a similar problem while importing from ArchiCAD via 3ds. My glass showed the same symptoms as FOB described.
So I deleted the face which was causing the problem and created a simple plane instead and applied the glass material and it looked fine for it
self, but a soon as I activated the rest of the window ( which I had turned off in between) I had the same problem again.
What I found where Coincident faces. One face had its normals outwards and one inwards into the model.
So I always thought it was only one face because I always thought to have two sided activated, but that wasn’t the case.
It helped me, so maybe you have the same - but its just a guess. I’m using 1.09r on max 5.1
:lol: